<template>
    <div id="he">
        <ul>
            <li>
            </li>
            <li>
            </li>
            <li>
            </li>
            <li>
            </li>
            <li>
            </li>
            <li>
            </li>
            <li>
            </li>
            <li>
            </li>
            <li>
            </li>
        </ul>
    </div>
</template>

<style lang="">
* {
    padding: 0;
    margin: 0;
    list-style: none;
}

#he {
    /* width: 100%; */
    display: flex;
    /*弹性盒模型*/
    justify-content: center;
    /*主轴方向居中显示*/
    align-items: center;
    /*交叉轴方向居中显示*/
    height: 100vh;
    background-color: #232e6d;
}

ul {
    height: 200px;
}

li {
    float: left;
    width: 20px;
    height: 20px;
    border-radius: 20px;
    margin-right: 10px;
}

li:nth-child(1) {
    background-color: #f62e74;
    animation: love1 4s infinite;
}

li:nth-child(2) {
    background-color: #f45330;
    animation: love2 4s infinite;
    animation-delay: 0.15s;
}

li:nth-child(3) {
    background-color: #ffc883;
    animation: love3 4s infinite;
    animation-delay: 0.3s;
}

li:nth-child(4) {
    background-color: #30d268;
    animation: love4 4s infinite;
    animation-delay: 0.45s;
}

li:nth-child(5) {
    background-color: #006cb4;
    animation: love5 4s infinite;
    animation-delay: 0.6s;
}

li:nth-child(6) {
    background-color: #784697;
    animation: love4 4s infinite;
    animation-delay: 0.75s;
}

li:nth-child(7) {
    background-color: #ffc883;
    animation: love3 4s infinite;
    animation-delay: 0.9s;
}

li:nth-child(8) {
    background-color: #f45330;
    animation: love2 4s infinite;
    animation-delay: 1.05s;
}

li:nth-child(9) {
    background-color: #f62e74;
    animation: love1 4s infinite;
    animation-delay: 1.2s;
}

@keyframes love1 {
    30%,
    50% {
        height: 60px;
        transform: translateY(-30px);
    }
    75%,
    100% {
        height: 20px;
        transform: translateY(0);
    }
}

@keyframes love2 {
    30%,
    50% {
        height: 125px;
        transform: translateY(-62.5px);
    }
    75%,
    100% {
        height: 20px;
        transform: translateY(0);
    }
}

@keyframes love3 {
    30%,
    50% {
        height: 160px;
        transform: translateY(-75px);
    }
    75%,
    100% {
        height: 20px;
        transform: translateY(0);
    }
}

@keyframes love4 {
    30%,
    50% {
        height: 180px;
        transform: translateY(-60px);
    }
    75%,
    100% {
        height: 20px;
        transform: translateY(0);
    }
}

@keyframes love5 {
    30%,
    50% {
        height: 190px;
        transform: translateY(-45px);
    }
    75%,
    100% {
        height: 20px;
        transform: translateY(0);
    }
}
</style>